Bicycle-pump



No. 617,954. Patented Ian. l7, I899.

F. S. CHASE. BICYCLE PUMP.

(Application filad Sept. 12, 1898.)

(No Model.)

FREDERICK S. CHASE, OF IVATERBURY, CONNECTICUT.

BICYCLE-PUMP.

SPECIFICATION forming part of Letters Patent No. 617,954, dated January17, 1899. Application filed September 12, 1898. Serial No. 690,731. (Nomodel.)

To all whom it may concern:

Be it known that I, FREDERICK S. OHAsE, of Waterbury, in the county ofNew Haven and State of Connecticut, have invented a new Improvement inBicycle-Pumps and Ido hereby declare the following, when taken inconnection with the accompanying drawings and the letters of referencemarked thereon, to

be a full, clear, and exact description of the same,and which saiddrawings constitute part of this specification, and represent, in-

Figure 1, a View in side elevation of a pump constructed in accordancewith myinvention; Fig. 2, a broken View of the lower end thereof invertical central section; Fig. 3, a vertical sectional View of the lowerend of the cylinder and cap transverse to that shown in Fig. 2, showingthem interlocked by the foot-rest; Fig. 4, a detached broken View of thelower end of the cylinder; Fig. 5, a corresponding view of the cap.

My invention relates to an improvement in portable bicycle-pumps, theobject being to produce a simple, compact, and effective ump.

With these ends in view my invention consists in certain details ofconstruction and combinations of parts, as will be hereinafterdescribed, and pointed out in the claim.

In carrying out my invention I employ a disk-like false bottom A, whichI locate and secure firmly within the cylinder B, at a point near thelower end thereof; The said false bottom may be produced and secured inplace in any desired manner. is turned to form a flange, which ispreferably soldered to the inner walls of the cylinder. The said falsebottom A is furnished with a nipple C, adapted to have the flexibleair-tube D applied to it in the usual manner. By employing the saidfalse bottom and locating it, asdescribed, in the cylinder B, I form asmall chamber E, which for convenience I- shall term the tube-chamber,for the reason that it permits an easy bend to be formed in the tube ata point between the nipple C and the deep notch B, formed in the extremelower edge of the cylinder for the entrance of the inner end of the tubeinto the tube-chamber E. Preferably the edge of the notch 13 will beturned inward, forming a flange b, so that the sharp edge of the metalwill not out the tube. The outer end of this tube-chamber is closed bymeans of a cap F, which is formed with a deep notch F, which registerswith As shown, its edge the notch B aforesaid and closes the tube at thepoint where the same passes through the notch B aforesaid. Vhen the capis in place, the bend of the tube is protected and prevented from beingdisturbed or squeezed, as it were, so as to cut off the free passage ofair through it. The said cap is secured in place by means of the wirefoot-rest G, the ends of which are turned inward at a right angle, so asto form trunnions G G, which pass through holes f f formed in the capand through corresponding holes b 1)" formed in the extreme lower end ofthe cylinder. Under this con struction the foot-rest is made to performthe additional function of securing the cap in place.

The piston II, piston-rod I, upper cap J, and handle K may be of anyapproved construction, and I do not limit myself to making them in anyparticular way, though I prefer to employ a spherical handle K onaccount of the convenience which'it secures in strapping the pump ontothe frame of a bicycle, inasmuch as it is little, if any, larger indiameter than the diameter of the cylinder. I would therefore have itunderstood that I do not limit myself to the exact construction hereinshown and described, but hold myself at liberty to make such changes andalterations as fairly fall within the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

In a pump, the combination with the cylinder thereof, of a false bottomsecured within the lower end thereof so as to form a tubechamber, anipple secured to the said bottom, and projecting into the said chamber,a cap applied to the extreme lower end of the cylinder for closing theouter or open end of the said tube-chamber, and a foot-rest having itsends turned inward to form trunnions which pass through holes formed inthe cap and into the lower end of the cylinder, whereby the cap issecured in place and the foot-rest pivotally connected with thecylinder.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

FREDERICK S. CHASE.

IVitnesses:

R. S. WALKER, WM. LEGGETT.

